LESSON 11.] SORTS OK KLO WKK-CI.TS TKUS. 88 



leaves or bnit'ts al)Out tlicir iniddU', have bnuu-licd apain, and pio- 

 ducetl the branehlets and Howers c c, on earh side. It is tlie con- 

 tinued repetition of this whicli forms the full or compound cyme, 

 such as that of the i.aiMii>tiiuis, llobblebusli, Dogwood, and lly- 

 dran;;ea (Fig. 1 •J'^)- 



2 IS. A Fascicle, like that of the Sweet-William and Lychnis of 

 the gardens, is only a cyme with the flowers much crowded, as it 

 were, into a bundle. 



211). A GlonUTlllc is a cyme still more compacted, so as to form a 

 sort of head. It may be known from a true head by the flowers 

 not expanding centripetally, that is, not from the circumference to- 

 wards the centre, or from the bottom to the top. 



220. The iUu-itratioiis of determinate or cymose inflorescence have 

 been taken from plants with opposit(j leaves, which give rise to the 

 most regular cymes. But the Rose, Cinriuefoil, Buttercup, and the 

 like, with alternate leaves, furnish equally good examples of this 

 class of flower-dusters. 



221. It may be useful to the student to exhibit the principal sorts 

 of inflorescence iu one view, in the manner of tlie iuUowing 



Analysis of Flower-Clusters. 



I. IXDETKnMIN.VTE OR CeXTKU'ETAL. (198.) 



Simple ; ami witli tlic 



Flowers l)orae on pedicels, 



Aloii{j the sides of a lengthened axis, Racemt, 201- 



Along a short axis ; lower pedieels lengthened, Couy.mii, 203 



Clustered on an extremely short axis, Ujiuel, 205- 

 Flowers sessile, without pedieels (206), 



Along an elongated axis, Spiki;, 207. 



On a very short axis, IIeao, 208. 



with their varieties, the Si-adix, 209, and Catkin, 210. 



Branching irngulaily, Panicle, 213. 



with its variety, the Tuvusfs, 214. 



II. Detkumixate ou Cextkikugal. (215.) 



U|)on, mostly flat-topped or convex, Cyme, 21C. 



Contracted into a bundle, Fascicle, 218. 



Contracted into a sort of liead, Glosierule, 219. 



222. The numbers refer to the j)aragraphs of this Lesson. The 

 various .«)rts run togctluM- by endless gradalions in diilerent ])laiifs. 

 Tlie l).>i;iiii>l merely designates the leading kinds by particular 

 Jiaine<. Kvcn the two classes of inflorescence are often f(umd com- 

 billed ill tiiu same plant. Fur instance, iu the whole Mini Faniiiv, 



